Combination heater and maintenance-wagon



H. P. ANDRESEN. COMBNATIDN HEATER AND MAINTENANCE WAGON.

APPLICATION FILED FEB. 24, 1920.

ndre ser) 132m/ JNVENTOR. Herman P ATTORNEY H. P. ANDRESEN. COMBINATION HEATER AND MAINTENANCE WAGON.

APPLICATION FILED FEB. 24. i920.

INVENTOR. H e rm v n F? FCSSI A TTORNEY UNITED STATES PATENT OFFICE.

HERMAN 1. ANDRESEN, OF CHICAGO, ILLINOIS.

Specification of Letters Patent.

Patented May 11, 1920.

Application led February 24, 1920. Serial No. 360,577.

To all whom z't may concern:

Be it known that I HERMAN P. ANDRE- sEN, a citizen of the llnited States, anda resident of Chicago, county of Cook, and State of Illinois, have invented a certain new, useful, and Improved Combination Heater and Maintenance-Wagon, of which the following is a specification.

My invention relates enerally to wagons or portable apparatus or use 1n construction work, and relates more particularly to wagons or portable apparatus adapted for use in construction work in which the characteristics of some 0f the material requires heat for use.

For patching or repairing roads or pavements of a bituminous nature, such, for example, as asphalt, tar bound aggregate and the like, it is necessary to heat the materials. It frequently happens that two materials of different characteristics, such, for example, as tar and aggregate, c'. e. sand and stone (or one or both) must be heated and oftentimes mixed for application to the road or pavement. Difficulty has been encoun tered in properly heating or tempering the different materials for, in some instances, if the aggregate be properly heated and dried, it is likely to subject the bituminous material to such heat as to coke or burn it and thereby destroy or impair its usefulness. Again, if the bltuminous material be heated only to desired temperature it may result in failure to bring the aggregate to desired working temperature. This has led to the practice of providing heating devices for each material.

In cement concrete construction work, it is oftentimes necessary, during the winter months, to heat the water, stone, sand and the "like or one or more thereof) before mixing. t is also desirable to provide means for bringing the materials to the required temperature without bringing-any thereof to a temperature above that deslred.

For many of the paving or patching o'perations, it is-necessary to heat tools of different kinds,I such as tamper's, smoothing irons and the like, and for this purpose it has been customaryV to provide a separate fire wa on.

he general object of my invention 1s to provide a wagon or porta le apparatus of such character that a single fire shall serve.

to heat materials of different characteristics to such temperature as is`desired or as is best suited for the work in hand.

A further object of my invention is to provide a wagon or portable apparatus adapted to heat materials of different characteristics to desired temperature economically and to provide a pipe for the discharge.V

or liquid or semi-liquid materials, which pipe shall be heated substantially throughout its length thereby permitting the proper How of materials (such for example-bitumens) which would otherwise congeal.

Again it is an object of my invention to provide an apparatus adapted, with a single fire, to heat materials of different kinds; to heat tools such as tampin irons, smoothers and the like to proper wor ing temperature and to provide means for the convenient discharge of desired quantities of the respective materials upon a suitable mixing pan; and to provide a construction enabling the convenient insertion and removal of the'tools to be heated, all b the use of a small amount of fuel an with a minimum of labor.

My invention consists generally in the form, arrangement, construction and coperation of the parts whereby the above named objects, together with others which will appear hereinafter, are attainable; and my invention will be more readily understood by reference to the accompanying drawingswhich illustrate what I consider, at the present time, to be the preferred em- Y bodiment thereof.

In said drawings:

Figure 1, is a central longitudinal sec tion through apparatus embodying my invention.

Fi 2, is a detailed view substantially on the line 2-2 of Fig. 1.

Fig. 3, is a transverse vertical sectionv substantially on the line 3-3 of Fig. 1; and

Fig. 4, is a front elevation of the front end of the apparatus viewed from the direction opposite from that direction from which Fig. 1 is viewed.

pparatus of this character is much used in repairing and patching roads and pavements of a bituminous nature such as asphalt, tar bound aggregate, etc., and, for this reason, I shall describe the especial features of the apparatus withrelation to such work. I do not mean thereby to limit the invention to such use unless specific limitations be made in the claims to that end.

The apparatus here shown may be termed a wagon, since it comprises a front .axle 1 and a rear axle 2 upon which suitable road wheels are mounted for travel over the ground 3. Upon these wheels and axles a super-structure of novel form is mounted. The super-structure, as here shown, is composed of the side plates 4 and 5 which are spaced apart and which, together with the front plate 6, rear plate 7, and the bottom plates 8 and 9, form a .box-like i'nelosure hereinafter termed a fire box. It will be observed that the lower front part of the side lates is cut away to permit the front whee s to swing thereunder when the wagon is turned. The front axle 1 is mounted on a king bolt 10 which passes through the supporting bracket 11 and enables swinging movement of the axle. i

At the forward part of the apparatus I arrange a v ssel or tank 11 in which the material 12 is heated. This material will frequently be a bituminous material such as tar, asphalt and the like which must be brou ht to proper temperature for use. The vesse 11 is suitably supported from the side and end plates by means of the angle irons 13 and 14, and the bottom of theyessel is supported somewhat above the plate 8 thereby forming a passageway for the gases of combustio An elbow 15 is secured to the end plate 6 and thereon is supported a smoke stack or pipe 16 of any desired length.

At the rear end of the wagon I have provided bins or containers 17 and 18 in which, ordinarily, aggregate 19 will be placed. In order to be a le to bring the aggre ate up to desired temperature quickly, I pre er to provide a central passageway 2O at the rear of the apparatus, and which is formed by the rear plate 7 and the angularly disposed plates 21 and 22 that unite with the central division late 23. The passageway 20 is continue into the smoke stack or pipe 24 which may be of such height as is necessary to rovide'a suilicient draft.

, he bottom plate 25 of the aggre rate bins is inclined at such an angle as wil enable' the aggregate material to slide or fall, b

gravity when the control gates are openc It is requently desirable to mix the aggregate material with the material or liquid contained in the vessel 11 and for this purpose I provide a mixing pan 26. This pan is composed of a bottom 27 and an inner wall 28Y together with substantially triangular end walls. IIhe whole pan is mounted upon. a pivot 29, carried in a bracket depending from the apparatus, thus adapting the pan to be swung upwardly to the posi- -tion shown by the dotted lines in Fig. 1.

When the pan is in the vertical position, shown by means of dotted lines, it serves as a holder in which various tools such as posed spaced vertical plate members 31 and 32 which, together with the side Walls4 and 5 of the apparatus, form a box, the bottom of which is provided with grate bars 33 for support of the fuel 34.-. Fuel is placed upon the grate through the fuel door 35. The fuel-box or grate is arranged substantially centrally of the apparatus so that the products of combustion may find escape throu h both the chimneys 16 and 24, if desired, t5(- ing the general passage indicated, during which passage they come in contact with the walls of a vessel 11 and the walls of the aggregate bins. The construction is such that the gases contact the walls of these chambers for a considerable period of time, thereby imparting most of their heat before escaping through the smoke stacks. I prefer to provide the smoke stacks 16 and 24 with dampers 16 and 24 respectively whereb the effective size thereof may be varie These dempers or valves are provided not only for the' purpose of regulating the amount of air that shall pass through the grates for combustion purposes, but also to the end that a smaller quantity of the ases of combustion may pass through one o the smoke stacks than through the other. In other words, by regulating the dampers or valves 16 and 24 relative to one another such proportion of the total volume of the gases of combustion generated may be caused to flow through one smoke stack, as is desired, thus causing the remainder to pass through the other stack. Thus all danger of overheating one or underheating the other of the materials is avoided whileboth can be raised to desired temperature.

For the discharge of the material from the vessel 11 an inclined ipe 36 is provided which projects through t e rear wall 7 and there terminates in an elbow. Since the pipe 36 is throughout substantially its entire length, in contact with the gases of combustion even such materials as asphalt and tar will flow freel by gravity through the pipe. For control .ing the discharge of material through the pipe 36 a valve 37 is rovided.'A

ischarge of a gre ate from either or both of the bins 1g an 18 is controlled l f means of the gute valves 38 und 39 whirl when raised will permit the flow of material, by gravity. In order to confine the discharge of material to the mixin pan 26 hoods 38 and 39 are provided. y the means disclosed so much of the various materials, as is desired, can be discharged upon the pan 26, for mixture or removal, .all without necessity of any other operatlon than that of opening the control gates or valves.

As shown, the aggregate bins are closed by hinge doors 17 and 18' res ectively. The hinges for the doors 17 an 18 are attached to spaced members 40 and 41,' which members form walls between which materials, such as bags of cement, tools and the like, can be placed.

In the cla'msthe term burner is used broadly to cover any device with, on or by which heat can be generated, as forexample a grate, a liquid fuel burner, a gaseous fuel burner, etc., and the term smoke stack is used broadly to cover an outlet for the products of combustion.

I have also provided means whereby the single fire provided shall also serve effec tually to heat the various tools such as tamping members, smoothing irons and thelike, without interfering, in any way, with the operation of the fire. To this end, I provide an opening 42 in the side wall 4 which is normally closed by a vertical slidable gate or door 43. The lower part of the gate 43 is provided with a number of notches 44 and the material defining the lower part of the opening 42 is reversely notched as indicated bv means of dotted lines in Fig. 4 at 45. Then no tools are being heated the ate occu ies the lower position shown -in ig. 4. hen, however, it is desired to place tools to be heated in the position shown by dotted lines in Fig. 3, the gate 43 is lifted to permit placement of the tool into the fire and then the gate is permitted to fall. It will be understood that the lower part of the handle of the tool rests in one depression 45 and the upper portion thereof is encompassed by the notch 44 of the gate, thus effectually closing the gap and preventing the admission of an undesirable amount of air. The gate, for the placement of the tools is shown only at one side of the apparatus but, if desired, the Vgate may be upon the other side or upon both sides.

It should also be understood that while two aggregate bins are shown one only will be provided by the mere elimination of the central partition.

The advantageous features of construe tion and operation will be understood by those skilled in this art without further comment.

lr claim:

1. An apparatus of the class described embodying therein a portable fire box. a

plurality of separate material receptacles in said fire box, a burner near the middle of the tire box, a smoke stack near each end of said lire box, and means for regulating the draft through each of said smoke stacks whereby the heat can be properly proportioned between said receptacles.

2. An apparatus of the class described -embodying therein a portable fire box,

smoketstacks leading from spaced points thereof, se arate material receptacles arranged in t e fire box, a burner positioned to discharge products of combustion into the fire box, and means for regulating the proportionate flow of-the' products of combustion-*through res ective smoke stacks.

3. An apparatus o the class described embodying therein a portable lire box, a burner arranged in the fire box, a tool door in the fire box adjacent the burner, smoke stacks leading from spaced points on the fire box, separate material receptacles arranged in the lire box, and means for regulating the proportionate flow of the products of combustion through respective smoke stacks.

4. An apparatus of the class described embodying therein a portable fire box, a burner arran ed in the fire box, a iire door at one side tereof, and a tool door at the other, smoke stacks leading from spaced points of the lire box, separate material receptacles arranged in the fire box, and means for regulating the proportionate flow of the` products of combustion through respective smoke stacks.

5. An apparatus of the class described embodying therein a portable fire box, a burner arranged thereon, a tool door in the fire box adjacent the burner, said tool Vdoor being notched to Vreceive the handle of a tool, smoke stacks leading from spaced points on the fire box, separate material receptacles arranged in the fire box and means for regulating the roportionate flow of the products of com ustion through respective smoke stacks.

6. An 'apparatus of the class described embodying therein a portable fii'e box, smoke stacks leading from spaced points, thereof, separate material receptacles 'arranged in' the fire box, a burner positioned to discharge products of combustion into the fire box, means for regulating the proportionate ow of the products of combustion through respective smoke stacks and means for'discharging material by gravity from the respective receptacles.

7. An apparatus of the class described embodying therein a portable fire box, smoke stacks leading from spaced points thereof, a burner positioned to discharge products of combustion into the fire box, separate material receptacles arranged in the {ire box, means for regulating the proportionate ow of the products of combustion through respective smoke stacks, a material mixing pan secured to the apparatus, and means for discharging material by gravity from the respective receptacles and upon the material mlxing pan.

8. An apparatus of the 'class described embodying therein a portable fire box, smoke stacks leading from spaced points thereof, separate material receptacles arranged in the lire box, at least one thereof constituting an aggre ate receptacle, a burner positioned to disc arge the products of combustion into the fire box, means for regulating the proportionate flow of the products of combustion through respective smoke stacks, and a flue formed upwardly adjacent the my hand, this 19th da of Februar aggregate receptacle and leading to one of said smoke stacks.

9. An apparatus of the class described embodying therein a portable fire nox, a receptacle at one end for heating solid a gregates, a receptacle at the other end for eating material that is flowed when hot, a burner arranged underneath the receptacles and intermedlate the receptacles for heating same, and a discharge pipe carried through the fire box to convey the material that is to be flowed when hot.

In testimony whereof I have hereunto set 1920. SEN.

HERMA P. ANDR 

